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公开(公告)号：US4980836A
公开(公告)日：1990-12-25
申请号：US257954
申请日：1988-10-14
CPC分类号： G06F1/3215 , G06F1/3237 , G06F1/325 , G11B19/00 , G11B19/06 , G06F11/0757 , G06F11/349 , Y02B60/1221 , Y02B60/165 , Y02B60/32 , Y10T307/406 , Y10T307/461
摘要： A battery powered computer system monitors the address bus to determine when selected peripheral devices have not been accessed for a preset amount of time. When the preset amount of time has passed the system powers itself down and stops the system clock, placing it in a standby mode. The system is awakened by depressing a standby switch, unless there is insufficient energy in the batteries, under which circumstances an AC power source must be connected before the system can be awakened.
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公开(公告)号：USRE36189E
公开(公告)日：1999-04-13
申请号：US993093
申请日：1992-12-18
CPC分类号： G06F1/3215 , G06F1/3237 , G06F1/325 , G11B19/00 , G11B19/06 , G06F11/0757 , G06F11/349 , Y02B60/1221 , Y02B60/165 , Y02B60/32 , Y10T307/406 , Y10T307/461
摘要： A battery powered computer system monitors the address bus to determine when selected peripheral devices have not been accessed for a preset amount of time. When the preset amount of time has passed the system powers itself down and stops the system clock, placing it in a standby mode. The system is awakened by depressing a standby switch, unless there is insufficient energy in the batteries, under which circumstances an AC power source must be connected before the system can be awakened.
摘要翻译： 电池供电的计算机系统监视地址总线以确定何时选定的外围设备在预设的时间内未被访问。 当预设的时间量过去时，系统自动关机并停止系统时钟，将其置于待机模式。 除非电池没有足够的能量，否则系统会被按下待机开关而唤醒，在这种情况下必须连接一个交流电源才能唤醒系统。
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公开(公告)号：US5014193A
公开(公告)日：1991-05-07
申请号：US258148
申请日：1988-10-14
申请人： Paul M. Garner , Carrie Boone , Darren J. Cepulis
发明人： Paul M. Garner , Carrie Boone , Darren J. Cepulis
IPC分类号： G06F13/14 , G06F9/06 , G06F15/177
CPC分类号： G06F9/4411 , G06F15/177 , G05B2219/36417 , G05B2219/41206 , G05B2219/45083
摘要： A dynamically configurable computer system which includes apparatus for storing former and sensed current system configuration data and for automatically reconfiguring the system without user interaction.
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公开(公告)号：US5248964A
公开(公告)日：1993-09-28
申请号：US336864
申请日：1989-04-12
摘要： A method and circuitry for using two buffers containing video display information is shown. One buffer contains character mask or dot image information, while the other buffer has two portions, foreground and background, which store attribute information. In non-compatible write operations attribute information stored in registers is written to the attribute buffers when mask information is written to the first buffer. In compatible write operations the attribute value is written to the foreground attribute buffer and zero is written to the background buffer, while an OR'ed value of the attribute value is written to the first buffer. In non-compatible read operations the value in the first buffer may be obtained or a CRC value may be generated on the entire character cell. The CRC value can be compared with similar CRC values developed on the character mask of interest to determine if a character is present in the cell. In compatible mode read operations the value in the foreground or background buffer is selected based on the value in the first buffer. In display drive operations a similar selection is made and the value supplied to the circuitry driving the display.
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